Locomotive driving box



Feb.4, 1930. L. L. RoBiNsoN. JR 1,746,129

LoooMoTIvE DRIVING B0X Filed May 1-8, 1927 Patented kFeb. 4, 193,0 y r 1: i

UNITED STATES PATENT. oFFiCE LESTER LoUDrA ROBINSON, Jn., F SMITHFIELD, rENNsYnVANiA, AssieNoB. or

ONE-HALF TO CHARLES A..v GILI, OF. BALTIMORE, MARYLAND Locoivroivn DRIVING -Box f Application led May 18,` 1927. Serial No. 192,427. This invention relates to improvements in 10 formed in theouter end of each wedgev locomotive drive boxes, the general object of where it receivesfalock nut 1l. Y

the invention being to provide a removable Curved lugs 12 are formed at spaced incrown brass for the b'oxwhich is held in placev tervals in the groove ink each shoulder andV .f 5 by the contracting action exerted by the box *these lugs engage annular grooves 13 formed -55 upon the crown, with wedge means for p'er.- in each shaft. Thus these lugs will prevent v fmitting the crown to be removed after the longitudinal movement of the shaft' so that f j boxy has been expanded. r when the shaft is turned, its threads,` engag- Another object of the invention is to proing the teeth in the bottom'of groove 9', will vide interlocking means between the crown cause the wedge to be moved longitudinally 60 and the box for preventing )longitudinal in one direction-or the other according to the movement of the crownin the box.k direction of rotary movement of the shaft.

' This invention also consists in certain other The. top of each wedge is tapered and each features of construction and in the combina- A edge of the crown is correspondingly tapered, tion and arrangement of the several parts,to as shown at 14, these tapered faces prevent- 65 i 'y be hereinafter fully described, illustrated in ing the wedge frommoving toward the jourthe accompanying drawings and specifically nal. As will be' seen, the grooves doy not expointed out in the appended claim. v tend througli'the rear part of the crown so j In describing my invention in'detail, referthat thisrearpart is left intact and acts as 1 yence will be had tothe accompanying drawa guide in removing the crown. j Y70 ings wherein like characters denote-like or From the foregoing it will be seen that f corresponding parts throughout the several after the box has been expandedV bya jack views, and in whic .z-- y or other tool. and the wedges removed, the: A Figure 1V is 'a front view yof ythe improved old crown brass can be taken from the box? box and its crown. and a new Aone substitutedp, ,The wedges' are `75 Figure 2 is a vertical sectional view through then put in place, after which the jack isy re-l Figure l. moved so thatthe box will contract and thus l Figure?) is a section on line S-f of Figexert pressure upon, the crown to hold it ure 2. n y against movement. 'Ihewedges fill the'l gap o Figure 4 is a perspective view of one of that musi? be plOVded i171; Order 130 .let hfsow the Wedges A Y, crown lower itself to permit the'rib '5 to passV Y ,f In these vvievvsi indicates the box which 'is below the. grQOVefl S0 that the Grown cank provided with the inwardly extending probe TemOVCd WllhOllt IDQIGYGIICG Q11 the part 1 ds of its limbs of the rib. Thisrib and its groo'veprevents jections 2 adjacent the lower en Y A v these projections being adapted to recewe a longitudinal movement of the crown and by 8 5- jackor other expanding tool so that the limbs arrangement .the Crown .can drop bem/W t vcan' be forced apart to permit the crown brass ih@ C ente' tlelournal Whlch EHQWS mom 3 to be put in place.. The top interior wall ,beamg l e rassam'alsfprovllfka taper 4 vof the box is formed with a groove 4: and the yIW.1,C e Screw We ge 1S app, .le Y v 0 t is thought from the foregoing descrip- 90` n crown is formed with a rib 5 for engaging vh t h f d r f the roove so that the crown is held a yainst mont im t e-a Val-wages and nofvel features g v. g of my invention will be readily apparent. longltudmal movement m the -bOX' Wedges o I desire it to' beunderstood that' I may'v 6 are Placed in the Spaces between the Side make changes in the construction and inthe i edges 0f the Crown and the shoullesomed combination and4 arrangement of the several 95 llrghbglaglfecrvvdeafs Sag-bg patprovidegfiat suchzlanlges fally withv Y in e scope o e appen e c aim. a groove formed Vin each shoulder and en- What I elaim`isz Y gaging a groove 9 provided with teeth in A locomotive `drive box capable of being thewedge, the shaft passing through a hole expanded, a crown brass arranged in said 100 CII ACn

boX and received by the box when contracted, a rib formed with the top Yof the crown brass transversely thereof and received in a groove in the box to prevent longitudinal movement of the crown brasssad crown brass having its lower ends inclined foraportion 4.of their length, shoulders formed in the `b'ogin spaced relation to theV inclined portions, Wed es ben l tween the inclined portions and shoulc ers re spectively, and being formed With toothed grooves, curved lugs Vformed at intervals, in grooves formed 1n the shoulders,v the grooves of theshoulders cooperating With the grooves. i

of the Wedges, screwsliats arrange@inz-eoV operating grooves for V.longitudlnal movement of said Wedges with respect to the 1nclined portions, said vscrevv shafts :being formed With annular grooves tov receive the Wedges to `prevent longitudinal movement of. Y.

the screw shafts, and a lookl nut'for each sorevv shaft. y y l In testimony whereof Iaix my signature. LESTER 'LOUDIA ROBINSON, JR. 

